One of the most commonly grown for forcing in Europe, the Marechal Foch plant features numerous strong flowers even after the hardest of winters. It is often used in pollination and seed raising because of its strong fertile flowers with vivid color. This small plant produces rich rosy-pink, purple to vivid deep gentian blue blooms depending on the soil type. The hydrangea is one of the Mouillere hydrangeas first bred in 1924 and also one of the best loved.